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12th Class Physics Electrostatics & Capacitance Question Bank MCQ - Electrostatic Potential and Capacitance

  • question_answer
    The potential of an electric dipole vary with distance r as:

    A) \[\frac{1}{r}\]

    B) \[\frac{1}{{{r}^{3}}}\]

    C) \[\frac{1}{{{r}^{4}}}\]

    D) \[\frac{1}{{{r}^{2}}}\]

    Correct Answer: D

    Solution :

    (d) \[\frac{1}{{{r}^{2}}}\] The potential of electric dipole at a distance r from the centre of the dipole is \[V=\frac{1}{4\pi {{\varepsilon }_{0}}}\frac{p\,\cos \theta }{{{r}^{2}}}\] \[V\propto \frac{1}{{{r}^{2}}}\]


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